General hydroponics what does these bottles do and should I feed this stuff both my clones pictures at bottom never used stuff like this

Armor Si is silica for hydroponics. Soil has plenty of silica so it's unnecessary to ever use with soil. Calimagic is calmag which is necessary but if you're feeding with tap water it's probably unnecessary also at this stage. Tap water contains trace amounts of calmag that should be enough for plants that small. Maybe use it at 1/4 strength once you hit week 4. Flora blend is for plants in the flowering stage. It's supposed to increase terpenes and make the final product taste better. We have nothing concrete that leads us to believe it actually works but it won't hurt the plants so you can use it starting on the third week of flower.